On May 2, 2016, First Trust ISE-Revere Natural Gas Index Fund (FCG) effected a reverse share split of its outstanding shares in which five outstanding FCG shares were converted into one FCG share. All share and per share data set forth below and elsewhere on this website (including for periods prior to the reverse share split) have been adjusted to reflect the reverse share split.

Investment Objective/Strategy -The First Trust Natural Gas ETF is an exchange-traded fund. The investment objective of the Fund is to seek investment results that correspond generally to the price and yield, before fees and expenses, of an equity index called the ISE-Revere Natural Gas™ Index.

There can be no assurance that the Fund's investment objectives will be achieved.

The ISE-Revere Natural GasTM Index is comprised of exchange-listed companies
that derive a substantial portion of their revenues from the exploration and production of natural gas.

The Index is constructed by establishing the universe of U.S. listed
stocks of companies involved in the exploration and production of natural gas. Companies
whose natural gas proved reserves do not meet certain requirements are eliminated.

To meet Index eligibility,
a stock must also satisfy market capitalization, liquidity and weighting concentration requirements.

All qualified traditional C-Corporation and qualified Master Limited Partnership
(MLP) stocks are ranked on both liquidity and market capitalization within their segments.

Weights within each segment are scaled so that the largest weight is a multiple of the smallest weight.

The Index is optimized for liquidity and market capitalization at the component level.

The Index is rebalanced on the application of the above model on a quarterly basis.

Fund Overview

Ticker

FCG

Fund Type

Energy

Investment Advisor

First Trust Advisors L.P.

Investor Servicing Agent

Bank of New York Mellon

CUSIP

33733E807

ISIN

US33733E8075

Intraday NAV

FCGIV

Fiscal Year-End

12/31

Exchange

NYSE Arca

Inception

5/8/2007

Inception Price

$100.00

Inception NAV

$100.00

Rebalance Frequency

Quarterly

Gross Expense Ratio*

0.63%

Net Expense Ratio*

0.60%

* As of 5/1/2017

Expenses are capped contractually at 0.60% per year, at least until April 30, 2018.

Current Fund Data (as of 3/16/2018)

Closing NAV1

$20.69

Closing Share Price2

$20.67

Bid/Ask Midpoint

$20.70

Bid/Ask Premium

0.01%

Total Net Assets

$157,240,066

Outstanding Shares

7,598,365

Daily Volume

84,924

Average 30-Day Daily Volume

207,159

Closing Share Price 52-Week High/Low

$24.83 / $18.87

Closing NAV 52-Week High/Low

$24.85 / $18.85

Number of Holdings

36

Fund Characteristics (as of 2/28/2018)8

Maximum Market Cap.

$34,654

Median Market Cap.

$4,919

Minimum Market Cap.

$485

Price/Earnings

13.43

Price/Book

1.44

Price/Cash Flow

6.90

Price/Sales

2.50

Top Holdings (as of 3/16/2018)

Holding

Percent

Devon Energy Corporation

5.08%

Anadarko Petroleum Corporation

5.00%

Range Resources Corporation

4.99%

Continental Resources, Inc.

4.90%

EQT Corporation

4.89%

Concho Resources Inc.

4.80%

EnCana Corporation

4.66%

Antero Resources Corporation

4.59%

Newfield Exploration Company

4.56%

Cabot Oil & Gas Corporation

4.54%

Holdings are subject to change.

NAV History (Since Inception)

Past performance is not indicative of future results.

Distribution Information

Dividend per Share Amt (as of 3/19/2018)3

$0.0139

30-Day SEC Yield (as of 2/28/2018)4

1.29%

Unsubsidized 30-Day SEC Yield (as of 2/28/2018)5

1.27%

12-Month Distribution Rate (as of 2/28/2018)6

1.77%

Index Yield (as of 2/28/2018)7

1.81%

Bid/Ask Midpoint vs. NAV (as of 12/31/2017)

Number of Days Bid/Ask Midpoint Above NAV

Quarter Ended

0-49Basis Points

50-99Basis Points

100-199Basis Points

>=200Basis Points

12/31/2017

28

0

0

0

9/30/2017

28

0

0

0

6/30/2017

31

0

0

0

3/31/2017

29

0

0

0

Number of Days Bid/Ask Midpoint Below NAV

Quarter Ended

0-49Basis Points

50-99Basis Points

100-199Basis Points

>=200Basis Points

12/31/2017

35

0

0

0

9/30/2017

35

0

0

0

6/30/2017

32

0

0

0

3/31/2017

33

0

0

0

The price used to calculate market return is determined by using the midpoint between the highest bid and the lowest offer on the stock exchange, on which shares of the Fund are listed for trading, as of the time that the Fund's NAV is calculated.

Top Sector Exposure (as of 3/16/2018)

Energy

97.18%

Utilities

2.82%

Month End Performance (as of 2/28/2018)

3 Mos

YTD

1 Year

3 Year

5 Year

10 Year

SinceFundInception9

Fund Performance *

Net Asset Value (NAV)

-8.08%

-11.47%

-15.78%

-27.41%

-23.04%

-15.41%

-12.94%

After Tax Held

-8.08%

-11.47%

-16.39%

-28.08%

-23.55%

-15.77%

-13.29%

After Tax Sold

-4.78%

-6.79%

-9.37%

-19.28%

-15.07%

-9.19%

-7.94%

Market Price

-8.17%

-11.52%

-15.79%

-27.45%

-23.04%

-15.42%

-12.94%

Index Performance **

ISE-Revere Natural Gas™ Index

-8.00%

-11.42%

-15.16%

-27.42%

-23.04%

-15.11%

-12.62%

S&P Composite 1500 Energy Index

-3.14%

-7.75%

-3.93%

-3.33%

-1.14%

0.45%

1.87%

Russell 3000® Index

2.40%

1.39%

16.22%

10.59%

14.37%

9.78%

7.87%

Quarter End Performance (as of 12/29/2017)

3 Mos

YTD

1 Year

3 Year

5 Year

10 Year

SinceFundInception9

Fund Performance *

Net Asset Value (NAV)

4.74%

-11.53%

-11.53%

-24.38%

-20.69%

-13.81%

-12.12%

After Tax Held

4.74%

-12.17%

-12.17%

-25.08%

-21.22%

-14.18%

-12.48%

After Tax Sold

2.68%

-6.55%

-6.55%

-17.43%

-13.86%

-8.54%

-7.62%

Market Price

4.74%

-11.56%

-11.56%

-24.38%

-20.71%

-13.81%

-12.12%

Index Performance **

ISE-Revere Natural Gas™ Index

4.83%

-10.88%

-10.88%

-24.50%

-20.69%

-13.51%

-11.80%

S&P Composite 1500 Energy Index

6.19%

-2.05%

-2.05%

-0.95%

2.05%

0.85%

2.67%

Russell 3000® Index

6.34%

21.13%

21.13%

11.12%

15.58%

8.60%

7.86%

3-Year Statistics (as of 2/28/2018)

Standard Deviation

Alpha

Beta

Sharpe Ratio

Correlation

FCG

38.06%

-41.57

1.66

-0.65

0.45

S&P Composite 1500 Energy Index

19.65%

-13.92

1.17

-0.10

0.61

Russell 3000® Index

10.28%

---

1.00

0.99

1.00

Standard Deviation is a measure of price variability (risk). Alpha is an indication of how much an investment outperforms or underperforms
on a risk-adjusted basis relative to its benchmark.Beta is a measure of price variability relative to the market. Sharpe Ratio is a measure
of excess reward per unit of volatility. Correlation is a measure of the similarity of performance.

*Performance data quoted represents past performance. Past performance is not a guarantee of future
results and current performance may be higher or lower than performance quoted. Investment returns
and principal value will fluctuate and shares when sold or redeemed, may be worth more or less than
their original cost.

After Tax Held returns represent return after taxes on distributions. Assumes shares have not been sold.
After Tax Sold returns represent the return after taxes on distributions and the sale of fund shares. Returns
do not represent the returns you would receive if you traded shares at other times. Market Price returns are
based on the midpoint of the bid/ask spread on the stock exchange on which shares of the fund are listed for
trading as of the time that the fund’s NAV is calculated. Returns are average annualized total returns, except
those for periods of less than one year, which are cumulative. The fund's performance reflects fee waivers
and expense reimbursements, absent which performance would have been lower.

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and
do not reflect the impact of state and local taxes. Actual after-tax returns depend on the investor’s tax
situation and may differ from those shown. The after-tax returns shown are not relevant to investors who hold
their fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.

**Performance information for the ISE-Revere Natural Gas™ Index is for illustrative purposes only and does not represent actual fund performance.

Indexes do not charge management fees or brokerage expenses, and no such fees or expenses were deducted from the performance shown. Indexes are unmanaged and an investor cannot invest directly in an index.

The gross expense ratio for this fund is 0.63%.Expenses are capped contractually at 0.60% per year, at least until April 30, 2018.

S&P Composite 1500 Energy Index - The Index is a capitalization-weighted index of companies classified by GICS as energy within the S&P Composite 1500 Index.

Russell 3000® Index - The Index is comprised of the 3000 largest and most liquid stocks based and traded in the U.S.

Fund shares are purchased and sold on an exchange at their share price rather than net asset value (NAV), which may cause the shares to trade at a price greater than NAV (premium) or less than NAV (discount).

3

Most recent distribution paid or declared to today's date. Subject to change in the future. There is no guarantee that the fund will declare dividends.

4

The 30-day SEC yield is calculated by dividing the net investment income per share earned during the most recent 30-day period by the maximum offering price per share on the last day of the period and includes the effects of fee waivers and expense reimbursements, if applicable.

5

The unsubsidized 30-day SEC yield is calculated the same as the 30-day SEC yield, however it excludes contractual fee waivers and expense reimbursements.

6

12-Month Distribution Rate is calculated by dividing the sum of the fund's trailing 12-month ordinary distributions paid or declared by the NAV price. Distribution rates may vary.

7

Index yield represents the weighted average trailing 12-month dividend of the constituents of the ISE-Revere Natural Gas(TM) Index.

8

All market capitalization numbers are in USD$ Millions.

9

Inception Date is 5/8/2007

You should consider the fund's investment objectives, risks, and charges and expenses carefully before investing. You can download a prospectus or summary prospectus, or contact First Trust Portfolios L.P. at 1-800-621-1675 to request a prospectus or summary prospectus which contains this and other information about the fund. The prospectus or summary prospectus should be read carefully before investing.

ETF Characteristics

The fund lists and principally trades its shares on the NYSE Arca, Inc.

The fund's return may not match the return of the ISE-Revere Natural Gas™ Index. Securities held by the fund will generally not be bought or sold in response to market fluctuations.

Investors buying or selling fund shares on the secondary market may incur customary brokerage commissions.
Market prices may differ to some degree from the net asset value of the shares. Investors who sell fund shares may receive less than the share's net
asset value. Shares may be sold throughout the day on the exchange through any brokerage account. However, unlike mutual funds, shares may only be
redeemed directly from the fund by authorized participants, in very large creation/redemption units. If the fund's authorized participants are unable
to proceed with creation/redemption orders and no other authorized participant is able to step forward to create or redeem, fund shares may trade at
a discount to the fund's net asset value and possibly face delisting.

Risk Considerations

The fund's shares will change in value, and you could lose money by investing in the fund. One of the principal risks of investing in the fund is market risk. Market risk is the risk that a particular stock owned by the fund, fund shares or stocks in general may fall in value. There can be no assurance that the fund's investment objective will be achieved.

The fund may invest in securities issued by companies concentrated in a particular industry. The fund may invest in small capitalization and mid capitalization companies. Such companies may experience greater price volatility than larger, more established companies.

An investment in MLP units involves risks which differ from an investment in common stock of a corporation. Holders of MLP units have limited control and voting rights. In addition, there is the risk that a MLP could be taxed as a corporation, resulting in decreased returns from such MLP.

An investment in a fund containing securities of non-U.S. issuers is subject to additional risks, including currency fluctuations, political risks, withholding, the lack of adequate financial information, and exchange control restrictions impacting non-U.S. issuers. These risks may be heightened for securities of companies located in, or with significant operations in, emerging market countries. The fund may invest in depositary receipts which may be less liquid than the underlying shares in their primary trading market.

Companies in the natural gas industry are subject to certain risks, including price and supply fluctuations, increased interest rates, fuel prices which will vary with supply and demand factors including weather and general economic and political conditions, and prices of alternative fuels.

First Trust Advisors L.P. is the adviser to the fund. First Trust Advisors L.P. is an affiliate of First Trust Portfolios L.P., the fund's distributor.

The First Trust Natural Gas ETF is not sponsored, endorsed, sold or promoted by the International Securities Exchange (ISE).
ISE makes no representation or warranty, express or implied, to the owners of the fund or any member of the public
regarding the advisability of trading in the fund. ISE's only relationship to First Trust is the licensing of certain
trademarks and trade names of the ISE and of the ISE-Revere Natural GasTM Index which is determined, composed
and calculated by ISE without regard to First Trust or the fund.

Not FDIC Insured • Not Bank Guaranteed • May Lose Value

The information presented is not intended to constitute an investment recommendation for, or advice to, any specific person. By providing this information, First Trust is not undertaking to give advice in any fiduciary capacity within the meaning of ERISA and the Internal Revenue Code. First Trust has no knowledge of and has not been provided any information regarding any investor. Financial advisors must determine whether particular investments are appropriate for their clients. First Trust believes the financial advisor is a fiduciary, is capable of evaluating investment risks independently and is responsible for exercising independent judgment with respect to its retirement plan clients.

First Trust Portfolios L.P. Member SIPC and FINRA.
First Trust Advisors L.P.